6. Press and release the View button to exit View-Onlymode (figure 3-52).

Press the View button to exit View-Onlymode.

VIEW

All input buttons and output buttons return to unlit or background illumination.

The View button returns to unlit or background illumination.

Figure 3-52 — Press the View button to exit View-Onlymode

Viewing and adjusting the input audio level

On models with audio, the audio level of each input can be displayed and adjusted through a range of -18 dB to +24 dB to ensure that there is no noticeable volume difference among sources (figure 3-53). The audio level can be adjusted from the front panel or under RS-232/RS-422 or Ethernet control.

dBu

VU

 

+24

21

 

+21

18

 

+19

15

 

+16

12

 

+13

9

VCR

+10

6

+7

3

Audio

+4

0

+1

-3

Inputs

-2

-6

 

-5

-9

 

-8

-12

 

-12

-15

 

-15

-18

 

-18

-21

 

dBu VU

+24 21

+21 18

+19 15

+16 12

+13 9

+10 6

+7 3

+4 0

+1 -3

-2 -6

-5 -9

-8 -12

-12 -15

-15 -18

-18 -21

Low Audio

Output Level

dBu

 

VU

 

+24

 

21

 

+21

 

18

 

+19

 

15

 

+16

 

12

 

+13

 

9

 

+10

 

6

 

+7

 

3

Audio

+4

 

0

 

Inputs

+1

 

-3

-2

 

-6

 

-5

 

-9

 

-8

 

-12

 

-12

 

-15

 

-15

 

-18

 

-18

 

-21

 

1

2

3

4

5

6

7

8

9

10 11 12

1

2

3

4

5

6

7

8

 

 

MVX 128 A

Output

Level

Audio System

No noticeable volume differences between sources

High Audio

 

Output Level

CD Jukebox

 

Figure 3-53 — Audio gain and attenuation

1.

Press the Esc button to clear any input buttons, output buttons, or control

 

buttons that may be lit.

2.

To enter Audio mode, press and hold the Audio button until the button begins

 

to blink red, then release the button.

3.

Press and release an input button to select an input. The output buttons

 

display audio level and polarity (+ or –) for the selected input. Each lit output

 

button indicates 1 dB of gain or attenuation. Green output buttons indicate a

 

gain (+) audio level and red buttons indicate an attenuation (–) level.

4.

Press and release the Esc (>) and View (<) buttons to increase and decrease

 

the audio level.

5.

Press and release the Audio button to exit the Audio mode. The Audio button

 

stops blinking.

MVX Plus 128 VGA Matrix Switchers • Operation 3-29

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Image 51
Extron electronic MVX PLUS 128 manual Viewing and adjusting the input audio level, To blink red, then release the button